Re: Merc 4 bolt intake to 99A block
Best way in my opinion,
2GC- (GM)- carb has one end of the PCV system, other can be the road draft tube opening at the forward end of the manifold. I used an upside down freeze plug in the road draft tube hole to connect to, drill it and braze tube to it. Under the manifold, plug the hole in the valve valley.
Karl
|